-- Copyright (c) 2019-2022 David Vogel
--
-- This software is released under the MIT License.
-- https://opensource.org/licenses/MIT

-- Check if everything is alright.
-- This does mainly trigger user messages and suggest actions.

-----------------------
-- Load global stuff --
-----------------------

--------------------------
-- Load library modules --
--------------------------

local Coords = require("coordinates")
local ScreenCap = require("screen-capture")
local Vec2 = require("noita-api.vec2")
local Utils= require("noita-api.utils")

----------
-- Code --
----------

---Runs a list of checks at addon startup.
function Check:Startup()
	if Utils.FileExists("mods/noita-mapcap/output/nonempty") then
		Message:ShowOutputNonEmpty()
	end

	if not Utils.FileExists("mods/noita-mapcap/bin/capture-b/capture.dll") then
		Message:ShowGeneralInstallationProblem("`capture.dll` is missing.", "Make sure you have installed the mod correctly.")
	end

	if not Utils.FileExists("mods/noita-mapcap/bin/stitch/stitch.exe") then
		Message:ShowGeneralInstallationProblem("`stitch.exe` is missing.", "Make sure you have installed the mod correctly.", " ", "You can still use the mod to capture, though.")
	end
end

---Runs a list of checks for everything resolution related.
---@param interval integer -- Check interval in frames.
function Check:Resolutions(interval)
	interval = interval or 60
	self.Counter = (self.Counter or 0) - 1
	if self.Counter > 0 then return end
	self.Counter = interval

	-- Compare Noita config and actual window resolution.
	local topLeft, bottomRight = ScreenCap.GetRect() -- Actual window client area.
	if topLeft and bottomRight then
		local actual = bottomRight - topLeft
		if actual ~= Coords.WindowResolution then
			Message:ShowWrongResolution(Modification.AutoSet, string.format("Old window resolution is %s. Current resolution is %s.", Coords.WindowResolution, actual))
		end
	else
		Message:ShowRuntimeError("GetRect", "Couldn't determine window resolution.")
	end

	-- Check if we have the required settings.
	local config, magic = Modification.RequiredChanges()
	if config["fullscreen"] then
		local expected = tonumber(config["fullscreen"])
		if expected ~= Coords.FullscreenMode then
			Message:ShowSetNoitaSettings(Modification.AutoSet, string.format("Expected fullscreen mode %s. But got %s.", expected, Coords.FullscreenMode))
		end
	end
	if config["window_w"] and config["window_h"] then
		local expected = Vec2(tonumber(config["window_w"]), tonumber(config["window_h"]))
		if expected ~= Coords.WindowResolution then
			Message:ShowSetNoitaSettings(Modification.AutoSet, string.format("Expected window resolution is %s. But got %s.", expected, Coords.WindowResolution))
		end
	end
	if config["internal_size_w"] and config["internal_size_h"] then
		local expected = Vec2(tonumber(config["internal_size_w"]), tonumber(config["internal_size_h"]))
		if expected ~= Coords.InternalResolution then
			Message:ShowSetNoitaSettings(Modification.AutoSet, string.format("Expected internal resolution is %s. But got %s.", expected, Coords.InternalResolution))
		end
	end
	if magic["VIRTUAL_RESOLUTION_X"] and magic["VIRTUAL_RESOLUTION_Y"] then
		local expected = Vec2(tonumber(magic["VIRTUAL_RESOLUTION_X"]), tonumber(magic["VIRTUAL_RESOLUTION_Y"]))
		if expected ~= Coords.VirtualResolution then
			Message:ShowSetNoitaSettings(Modification.AutoSet, string.format("Expected virtual resolution is %s. But got %s.", expected, Coords.VirtualResolution))
		end
	end
	-- TODO: Check virtual resolution offset

end